package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * 静态资源处理器，放行静态页面
 *
 * 消息转换器，转换对象信息
 */

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始静态资源映射...");

        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("拓展消息转换器");

        //创建一个消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();

        //设置对象转换器，底层使用Jackson将Java对象转换为json对象
        messageConverter.setObjectMapper(new JacksonObjectMapper());

        //将消息转换器对象添加到mvc转换器对象集合中
        converters.add(0,messageConverter);

    }
}
